body,
p,
h3 {
  margin: 0;
  padding: 0;
}
body {
  background-color: #f5f5f5;
  font: 12px/1.5 Helvetica Neue, Helvetica, Arial, Microsoft Yahei, Hiragino Sans GB, Heiti SC,
    WenQuanYi Micro Hei, sans-serif;
}
h3 {
  font-weight: 400;
}

/* a的重置 */
a {
  text-decoration: none;
  color: #333;
  font-size: 12px;
}
